Ideal
This bakery offers excellent bread and fine pastries—but its cakes are truly incredible. In Barcelona, Sunday is the day when locals buy a special dessert and share it at home with your families, so Ideal is always very crowded that day. My advice: Go there on Saturday, buy a chocolate cake (the best, by far, if you like chocolate), ask for two spoons, then hide in your hotel room with a partner and one of the best desserts in the city.